化工学报2012，Vol.63Issue(1)：286-291,6.DOI:10.3969/j.issn.0438-1157.2012.01.040
改性活性炭负载高分子季铵盐的杀菌性能
Antibacterial property of polymeric quaternary ammonium salt immobilized on modified activated carbon
摘要
Abstract
Polymeric quaternary ammonium salt was immobilized on activated carbon (AC) , by oxidation of AC with concentrated nitric acid, subsequent eletrostatic assembly to produce a high-performance bactericide (P-AC) with good adsorption. The surface characteristics of AC before and after modification were analyzed by Boehm method. The composition and microstructure of P-AC were characterized by FTIR and TG. The adsorption capacity of the obtained P-AC was tested using phenol as a model compound, and the antibacterial activity against E. Coli was also measured. The results show that: (1) AC is well modified by concentrated nitric acid, carboxyl and lactone groups of AC increase while the hydroxyl groups decrease; (2) Polymeric quaternary ammonium salt was immobilized on modified AC with loading of 12% (mass), P-AC has lower BET surface area and the pore volume than AC, but has the larger average pore diameter; (3) P-AC exhibits good adsorption property for phenol, which is 82. 5% of adsorption capacity of AC; (4) P-AC shows excellent antibacterial property, an antibacterial efficiency for E. Coli of 99% can be achieved over a period of 2 hours. And a slight decrease of 5% in antibacterial efficiency can be observed after 10 batches of regeneration-antibacterial action cycle tests.关键词
活性炭/高分子季铵盐/杀菌/吸附Key words
activated carbon/polymeric quaternary ammonium salt/antibacterial property/adsorption分类
化学化工引用本文复制引用
周静茹,裴丽霞,张立志..改性活性炭负载高分子季铵盐的杀菌性能[J].化工学报,2012,63(1):286-291,6.基金项目
国家自然科学基金项目(51076047). （51076047）
